Question

write the atomic number of H , Na , Al , Si , p​

Answer 1

Answer:

The atomic number of sodium is 11, magnesium is 12, aluminium is 13, silicon is 14, phosphorus is 15, sulphur is 16, chlorine is 17 and argon is 18.

Answer 2

Answer:

The atomic numbers of the elements is shown below

H - 1

Na - 11

Al - 13

Si - 14

P- 15